EP3815814A1 - Dispositif - Google Patents

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Publication number
EP3815814A1
EP3815814A1 EP20204092.9A EP20204092A EP3815814A1 EP 3815814 A1 EP3815814 A1 EP 3815814A1 EP 20204092 A EP20204092 A EP 20204092A EP 3815814 A1 EP3815814 A1 EP 3815814A1
Authority
EP
European Patent Office
Prior art keywords
component
optical
sensor
interrogator
optical interrogator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20204092.9A
Other languages
German (de)
English (en)
Inventor
Stephan Six
Artemy Krasilnikov
Matthias Arzberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102020200818.3A external-priority patent/DE102020200818A1/de
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3815814A1 publication Critical patent/EP3815814A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B22D11/182—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B22D11/201—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level
    • B22D11/202—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level by measuring temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
    • G01K11/3206—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering

Definitions

  • the invention relates to a device, in particular a plant for the metallurgical industry, for example a casting plant.
  • WO 2011/038875 A1 a device of the metallurgical industry with a mold as a component.
  • a number of fiber optic sensors based on 1,500 nm technology are incorporated in the side walls of the mold. These are temperature sensors for generating a temperature measurement signal.
  • a mold with these characteristics is also from the EP 3 424 614 A1 known.
  • the measurement signal is transmitted via a cable-bound data transmission link to a fiber optic evaluation unit, a so-called interrogator. Due to the large distance to be bridged between the mold and the evaluation unit, the optical waveguide connection is often fragmented and the individual optical waveguide sections are connected to one another via couplings.
  • Every fiber optic connection attenuates the measurement signal and is very sensitive to dust and contamination. Even touching the plug or coupling contacts with bare fingers can severely impair light signal transmission. Such contamination is only possible through a more elaborate one Cleaning, which often cannot be carried out on site, to be remedied.
  • the diameter of the core of the single-mode optical waveguides used is typically 9 ⁇ m. For this reason, the precise alignment of opposing or to be coupled optical waveguides represents a great challenge each time an optical waveguide connection is coupled.
  • the use of lens plug-in connections makes it possible to maintain a certain working capacity or functionality of the transmission path; however, these lens connectors are very costly.
  • optical fiber plug connections can typically only be set up by well-trained personnel.
  • the fiber optic technology is very complex in the maintenance of the various fiber optic components.
  • a failure of an individual fiber optic extension section or its plug connections can lead to the failure of the entire safety-relevant monitoring system of the component to be monitored.
  • the localization of a defect in the fiber optic transmission path is technically difficult and time-consuming. If the very high-quality optical interrogator as a core component fails or is supplied with incorrect data, the entire monitoring system for the component is without function.
  • the invention is based on the object of improving the manageability of the device according to the invention even in adverse environmental conditions, such as. B. in a steel mill to improve significantly.
  • optical interrogator is mounted in or on the component.
  • An optical interrogator is an optoelectronic instrument with which the wavelengths of the light reflected by the optical sensors can be read out by the Bragg grating sensors (FBG).
  • the measuring unit can represent an optoelectronic instrument that eliminates the natural backscattering (Rayleigh, Brillouin, Raman) from particles within a light wave sensor.
  • optical interrogator also called interrogator
  • the fiber optic cables which are sensitive to dust and dirt, no longer have to be coupled in the heavily soiled area around the component.
  • the high-priced optical fiber cables used in the prior art and on the other hand also special plugs, in particular so-called lens plugs are dispensed with.
  • the service life of the component and the entire device are increased; the reliability and stability of the operation of the device can thus be better ensured.
  • there is the advantage that troubleshooting - if it is still necessary at all - is significantly simplified because many sources of error still present in the prior art are eliminated.
  • a location-independent signal check is possible: Due to the decentralized arrangement of the optical interrogator claimed according to the invention, it can also be advisable to remove the entire component together with the optical interrogator and to replace it with a similar, intact component with a new optical interrogator also arranged. As a result, longer repair times can be carried out away from the device without the operation of the entire device having to be dormant for so long.
  • the optical waveguides and the optical interrogator are designed using ⁇ 1400 nm technology.
  • the components of this fiber optic technology in particular the components of the ⁇ 1100 nm technology or the ⁇ 900 nm technology, are advantageously much smaller than z. B. the components of the 1,500-nm technology and, moreover, these ⁇ 1400-nm components are even cheaper. Due to the more compact design, the components of the ⁇ 900 nm fiber optic technology are particularly suitable for mounting the optical interrogator on or in the component.
  • a classic wired or wireless data transmission path is provided between the optical interrogator and a computer positioned far away from the component.
  • the term “wired” expressly excludes an optical fiber connection.
  • the data transmission link can be designed in the form of an electrical cable connection, specifically z. B. a Power-over-Ethernet POE, USB, Ethernet, EtherCAT or coaxial cable connection.
  • the data transmission link can be designed in the form of a wireless transmission link, e.g. B. in the form of a WLAN, Bluetooth or ZigBee connection.
  • the device In addition to data transmission, they preferably also enable a power supply. Maintenance of the The device as a whole is significantly simplified through the use of the tried and tested (plug-in) connections - even if light waveguides are also partially arranged in or on the component. It is also now possible to insert the component together with the optical interrogator mounted on it in the device or to remove it from the device; the assignment of the specific evaluation unit to the component is guaranteed in this way.
  • the computer can also - as an alternative to an arrangement remote from the component - be mounted in or on the component. This can be adjacent to that separately optical interrogator or the optical interrogator and the computer together form an integrated electronic measuring and computing unit that is mounted in or on the component.
  • the optical interrogator and the computer are preferably 4G capable, better still 5G capable.
  • FIG. 1 the device 100 according to the invention with a mold 110 as an exemplary component from the metallurgical industry.
  • a mold is used to cast metal in its mold cavity 112.
  • the mold cavity 112 is spanned by two opposite broad side walls 114 and two narrow side walls 116 of the mold arranged between them.
  • sensors 120 for example temperature sensors, are attached, each of which generates a measurement signal.
  • the measurement signal is transmitted with the aid of an optical waveguide 130 inside or on the mold to an optical interrogator 140 which, according to the invention, is also mounted in or on the mold 110.
  • the sensors 120 and the optical interrogator 140 there are no intermediate couplings between the sensors 120 and the optical interrogator 140 for connecting two optical waveguide sections intended; ie the sensors are connected directly to the optical interrogator, typically with the help of connector plugs.
  • Mounting the optical waveguides and the optical interrogator directly in or on the component or the mold offers the advantage that the problems described in the introduction when plugging together individual optical waveguide sections are eliminated.
  • the claimed configuration of the device ie the now claimed autarkic signal processing of the sensor measurement signals directly on the mold, offers a location-independent signal check during maintenance of the device or the component in a workshop, on a mold preparation stand, on a casting platform or in a continuous casting plant .
  • a tried and tested wired or wireless data transmission path e.g. B. in the form of a PoE Ethernet, USB, coaxial cable, WLAN, Bluetooth or ZigBee connection.
  • the data transmission capacities that can be realized are completely sufficient, because the large amount of measurement data generated by the sensors does not have to be used on this transmission path, but rather only a generally significantly smaller amount of evaluation data generated by the optical Interrogator. In the event of an accident, it is then only necessary to replace inexpensive electrical components of the data transmission path and not have to replace expensive optical components.
  • the computer 160 can also be integrated together with the optical interrogator in a measuring and computing unit; please refer Figure 2 .
  • the external data transmission link 150 can then be omitted.
  • the measuring and computing unit is preferably mounted in or on the component.
  • Said data transmission link 150 can also be configured to include a power supply for the optical interrogator 140, e.g. B. in the form of said PoE connection.
  • the sensors 120 can be designed separately as individual components; however, their design as so-called glass fiber sensors is particularly advantageous; the optical waveguides 130 themselves are then as z. B. temperature sensors or their signals are evaluated accordingly. In this case, no separate sensors, in particular no separate temperature sensors, are required.
  • the component according to the invention is a segment in a strand guide of a casting plant.
  • the strand guide is typically arranged downstream of a mold in the casting direction in order to deflect a cast strand made of metal that is cast in the mold from the vertical to the horizontal.
  • the cast strand is typically made up of a plurality of segments arranged one behind the other, which can be individually removed from the strand guide.
  • Each segment typically consists of an upper frame and a lower frame, on each of which a plurality of strand guide rollers for guiding the cast strand are rotatably mounted.
  • the strand guide rollers of the upper frame and the strand guide rollers of the lower frame are arranged opposite one another at a distance from one another and in this way span a guide channel for the cast strand.
  • the upper frame and the lower frame are typically mechanically connected to one another via brackets or hydraulic cylinders.
  • sensors for example temperature sensors, can be arranged on the upper frame and / or the lower frame.
  • the sensors can be arranged, for example, between two strand guide rollers that are adjacent in the casting direction in order to detect the temperature of the cast strand guided through the guide channel.
  • the sensors can also be arranged in the bearings of the strand guide rollers to measure their temperature. In this embodiment, too, the sensors could be coupled to the optical interrogator via optical waveguides.
  • the optical interrogator 140 can either be used alone or be arranged together with the computer 160 in or on the segment as a component, preferably in or on the upper frame and / or lower frame.
  • the advantages of this arrangement correspond to the advantages mentioned above with reference to the mold as a component.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
EP20204092.9A 2019-10-30 2020-10-27 Dispositif Pending EP3815814A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019216776 2019-10-30
DE102019219676 2019-12-16
DE102020200818.3A DE102020200818A1 (de) 2019-10-30 2020-01-23 Vorrichtung

Publications (1)

Publication Number Publication Date
EP3815814A1 true EP3815814A1 (fr) 2021-05-05

Family

ID=73029914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20204092.9A Pending EP3815814A1 (fr) 2019-10-30 2020-10-27 Dispositif

Country Status (1)

Country Link
EP (1) EP3815814A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229181U (fr) * 1975-08-22 1977-03-01
JPS546316U (fr) * 1977-06-15 1979-01-17
US4420250A (en) * 1979-08-01 1983-12-13 Endress U. Hauser Gmbh U. Co. Arrangement for measuring the bath level in a continuous casting apparatus
WO2011038875A1 (fr) 2009-09-30 2011-04-07 Sms Siemag Ag Lingotière de traitement de matière métallique liquide
JP5703828B2 (ja) * 2011-02-24 2015-04-22 Ｊｆｅスチール株式会社 連続鋳造機内での鋳片表面温度の測定方法
EP3424614A1 (fr) 2017-07-03 2019-01-09 Primetals Technologies Austria GmbH Montage d'un capteur de température à fibre optique dans un moule et moule comprenant plusieurs capteurs de température à fibre optique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229181U (fr) * 1975-08-22 1977-03-01
JPS546316U (fr) * 1977-06-15 1979-01-17
US4420250A (en) * 1979-08-01 1983-12-13 Endress U. Hauser Gmbh U. Co. Arrangement for measuring the bath level in a continuous casting apparatus
WO2011038875A1 (fr) 2009-09-30 2011-04-07 Sms Siemag Ag Lingotière de traitement de matière métallique liquide
JP5703828B2 (ja) * 2011-02-24 2015-04-22 Ｊｆｅスチール株式会社 連続鋳造機内での鋳片表面温度の測定方法
EP3424614A1 (fr) 2017-07-03 2019-01-09 Primetals Technologies Austria GmbH Montage d'un capteur de température à fibre optique dans un moule et moule comprenant plusieurs capteurs de température à fibre optique

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Owner name: SMS GROUP GMBH